Box-covering machine



Apr. 24, 1923.

A. WORCESTER BOX COVERING MACHINE File d Sept. 1, 1922 3 Sheets-Sheet 1A. WORCESTER BOX COVERING MACHINE Filed Sept. 1,

Apr. 24, 1923.

I "3 2 284 7' Z8 25 J L -2 A/berl V/Orcester 770/P/VfK5 Apr. 24, 1923.

A. WORCESTER BOX COVERING MACHINE Filed Sept. 1, 1922 3 Sheets-Sheet 3 VE g A/bert Worcester A r TOP/Y5K? Patented Apr. 24, 19235 "warrenETATESPATENTOFFICE.

' ALBERT WORCESTER,.OF LOS ANGELES, CALIFORNIA.

BOX-COVERING Macrame.

Application filed September- 1 .1922; Serial No. 535,649.

To all whom it may concern.

Be it known that 1, Alumni WORCESTER, a subject of the King of GreatBritain residing at Los Angeles, in the county of Los Angeles and Stateof California, have invented new and useful Improvements in Box-CoveringMachines, of lowing isa specification,

This invention relates to box covering ma; chines, and particularly tothat type of machine in which a boxbody is continuously rotated whilethere is applied to the samea continuous covering strip or sheet, thisbeing cut off at the suitable moment during the box covering operation.v

3 An object of the invention is to-provide a semi-automatic power drivenmachine wherel by a rotating box body is enveloped on its ment. Anobject is to provide in a machine.

i of the box form the machine. 1

peripheral faces with a suitable covering and means are included. foreffecting the seveiy ing of the covering sheet at the proper moabledemountable box form arm, provision.

being made for adjusting the length of the arm and for adjusting thelateral position I on the arm'with respect to Another object of theinvention is to provide means for facilitating the relative adjustmentof the movable cutter of the machine with respect to the stationarysupport.

A further object of the invention is to provide in a box coveringmachine means for varying. the speed of the operating mechanismaccording to the size of box being covered.

Other objects manifest in the following specification of an embodiment0f theinvention shown in the accompanying drawings, wherein torearthrough the cutting head and showwhich the foland advantages willbemadeing a movable cutter member in elevated position; i I Y Figure 41 is aside elevation and partial vertical section of the cutter'operatingmec-hanism showing the cutter in its cutting-off position; Y

Figure 5 is a face or end view of thecutter operating coordinate levers;F'gure 6 is a side elevation showing the cutter levers in the forward orcutter opening position; I H

Figure 7 is a side elevation of a secondary counter shaft showing thespeed varying mechanism and the clutch thereon;

' Figure 8 is a plan showing the adjustable demountable box form arm; p"Figure 9 is aside elevation of the demountable arm; 1 U v Figure 10 isa sectional detail view show ing the arm slide clainpff v In machines ofthe kind forming thesubj ect matterof the present invention, a strip ofpaper P is drawn from any suitablereel R over a gumming roller 2arranged in a suitable basin fiat the rear end of the ma;

chine and which is here shown as including a a suitable frame 4. At thefront end of this frame there is provided a substantially fixedtransversely extending bed plate 5. the ends of which are attached tobrackets 6,' and these extend. forwardly from a cross frame 7. Figurev3,which is mounted upon the prin-v cipal frame structure 41. 1 p

The gummed paper passes down over the front of the bed plate 5 and isadaptedto wrap about thebox body which is carried upon a rotating formF. During the operation of the machine. the paper is intermittently outafter a suitable length has been applied to the box body and thiscuttingis efl'ected preferably by. a swinging and yieldingily operativemeans. so that in case ofaccident if the fingers or hand of the op.-erator should be caught between ."the bed plate 5 andthe cooperatingcutter .10, the latter would stop. owing to the presence of theobstruction, and thus prevent'injury to the operator.

including a cutter beam 11 extending transversely ofthe machine andbeing pivotally mounted; along its upper longitudinal edge on a pivotdevice12. 'The pivot device 12 of thecutter beam 11 ismountedin aswinging carrierhaying side arms 13 and a transverse web l qiljthroughpasses 'a'bolt 15 which also passes, through the cutter beam blade 10with respect to the fixed bed plate 5. The web 14 has cushions 14' toengage the plate 5.

The carrier frame 13'has downwardlyextending arms 13%. and these havebosses, one of which is mounted on a trunnion or hear ing pin, 17. The,other bearing arm 13% is provided with a downwardly extending lever arm18 and this is connected to the upper end of adrive rod 19which ispivotally and adjustably connected at 20110 a lever 21. which is securedas by aset screw The rock shaft is 22 on a rock shaft 23. mounted inbearings 24 on the front end of the main frame, 4.' The rock shaft isoscillated at suitable intervals by apower mechanism which is under thecontrol of the machine operative and the actuating mechanism includes alever army 25, Figures 5 and 6, which is loosely mounted on the rockshaft 23, and s held between a set collar 26 and 1 thehub. 27 of afinger 28, the latter being fixed as by a set, screw 29 on the rockshaft I The upper swinging end of the loosely mounted lever 25 isslotted at 251; and receives apin 30 provided on the forward end of ashank 31 of a driving yoke 32 which straddles and is supported upon ashaft 33 disposed. lllflllSVGl'SGly of the frame 4 and somewhat back ofthe front legs thereof. The shaft 33 is provided with a fixed cam 34having-a concentric peripheral portion 34 and a. depressed portion 34%,and the yoke 32 is provided with a cam, roller 35 drawn constantlyagainst the periphery of the cam 34 by suitable means. preferablyconsisting of a tension spring 36,vone end of which is attached to theyoke 32 and the other end to any suitable fixed part on or' Of the frameand which may. consist of a bracket 37. From this it will'be seen thatthe yoke 32 is positively actuated by the cam in the forward movement ofthe yoke theshank end of which is supported in a guide38 fixed to theframe and during the rotation of the cam 34 the yoke 32 is pulled backby the contraction of the spring 36.

This yielding or retracting movement of the yoke. 32 is utilized in thepresent machine through suitable connections to throw the carrier13 withthe cutter 10 in its downward stroke to sever the strip of paper P.,llvhen the lever arm 25 s in its retracted nes les Eis i r a g a y atepa 40 hangs in a downwardly extending oblique position and rests upon abiacket 41 fixed to the machine. This pawl is arranged on ,one side ofthe lever arm 25 and is connected to a rock shaft 42 extendingtransversely which is secured as by the set screw 29 on a the rock shaft' 23. When the cam 34 rotates it forces the yoke 32 forwardly out ofthe cam depression and thus moves the lever arm 25 forwardly from theposition shown in Figure 4 to the position shown in Figure 6, andduringthis movement the latch being connected to the latch pin 28:}pulls the finger 2S forwardly until the downwardly curved end of thepawl 40 in riding out on the bracket 41 islifted and rocks the rockshaft 42 and disconnects the latch 43from the latch pin 28%. It willthus be seen that the rock shaft 23 is initially operated by power whenthe latch 43 is connected to the finger 28. The forward movement of thelever 25 and its temporarily connected finger 28 results in the downwardmovement of the lever 21 and by virtue of the connecting rod 19 thecutter frame 13 is swung upwardly,- carrying with .itthe cutter blade10. During the continued forward movement of the yoke 32 and after thefinger 43 is disconnected from the finger the now disconnected frame 1;,is moved to its uppermost position by the action of other means,preferably consisting of overbalancing weights 46. ends of which may bepivoted to the frame structure 4, having jswinging ends connected as bythe chains 47 to the outer ends of the arms of the frame 13. The chains47 are shown as passing over guide rollers 48 mounted on the head frameThis capacity for the automatic disconnection of the knife carrier 13from the positively. actuatin mechanism. enables the o 'ieiatiie toagain readily pull the cutter dowuby handif necessary during theoperation of the machine to cut paper.

After the cam 34 has rotated to such degree as to thrust the yoke andthe lever 25 to foremost position. as shown in Figure 6. the continuedrotation of'thc cam permits the spring 36 to pull the yoke 32 rearwardlyas the cam depression 34-l is presented to the cam roller 35.andthisresults in the relraw tion of the yoke 32 and the lever During theretraction movement, the lever engages the overlapping or contiguousportion of the finger 28 and the rock shaft is thusreversed in directionof operation and the con necting rod 19 is thrust upwardly ;with theresult that the knife carrier 13 and the plished by'the' tensionspring-136. This, therefore, enables the knife and the carrier 13toyield in case of material obstruction to the downward movement thedegree of resistance of which is sufiicient to prevent the effort of thespring 36 to pull the cutter .carrier and cutter down. a

- For driving the shaft; 33 this latter is provided with a gear whee-l50, and this engages with a pinion 51 which, in turn, is secured on ashaft 52 mounted in suitable journals 53 provided on the frame. ed onthe shaft 52 is a disk 54 operative by a shifit lever 55 to which isconnected a link 56 attached at its lower end to a foot pedal 57. Thelink 56 is normally pulled downwardly by a contractilespring 58 attachedthereto and to a suitable fixed part of the frame, Figure .7. Downwardpressure'on the pedal 57 results in the shitting of the disk 54 toward avariable speedlde vice, here shown as consisting of a threesteppedpulley -59 loosely mounted on the shaft 52. In the larger end of thispulley there is provided a suitable clutch device or member60 which isthrown into action by a pin 54:} attached to the actuating disk 54, andwhen the clutch member 60 is operatively connected to! the pulley 59this, in turn, drives the shaft 52. The pulley 59 is driven as by meansof a belt 62, taking powerfromthe main drive shaft 63.

The shaft 53 not only serves to operate the countershattv 33, whichactuates the cutter mechanism, but the shaft [52 also serves to rotatethe box form This box form is mounted upon a shaft 64L which islongitudinally adjustable in a gear boX 65 in which is arranged a gear66 splined on the shaftfi-i and held in con- I stant engagement with a,pinion 67. This pinion-is secured on the outer end ofa radius shaft 68mounted in bearings 69 and 70 provided on aradius arm 71 which isslidably adjustable in a guide 72 which has a side wall 73 pivoted onthecontiguous end of a fixed, grooved boss 4 bearing the shaft 52. Thegroovedl boss 4 forms, therefore, a trunnion on which the frame '73 canswing and a pin P enters the groove of the boss to fasten thetramcin-position-against axial movement but allows the-frame to swing.Just'inside the wall, 73 there is fixed on the shaft .59 a pinion 74:andthis engages constantly a pinion 75 which 'is splined on the radiusshaft 68 and is prevented from endwise movement bythe contiguous bearinglurr 76.

The guide 72, carrying the slide arm 71,

has a flat face bearing against-a quadrant .77 which is fixed to aportion of the frame at of the machine and has a slot 78 in which swingsa clamp screw 79 which is threaded Slidably mountin the contiguous wallor webofthe guide ment in the guide 72, and is then clamped in desiredposition by means of a clamp screw 80 passing through the bottomgofguide 72 and engaging a clamp member or gib 81 which bears down upon 5the slide arm 71. I .l 4' The shaft 64 is longitudinally adjustablethrough its bearings in the walls of the box 65-and is adapted to beclamped in suitable position by a set screw 82injcollar 83,

From this it will be seenthat a form F of 'proper dimensions may bereadily mounted upon the. detachable and adjustable radius arm"mechanism and; the

speed of operation of: the device may The.

determined according to the size; of the box being covered bychanging'the speed of the stepped pulley 59, and the boxcarryingjarm canbe readily disconnected from its support 4, andother attachmentsofrequired char acters may be substituted instead. It is desirable toprovide a gradual-downward movement 'of-the cutter ,10-..-until itclosely approaches the fixed. plate member 5. At this positionthe-cutter is given an accelerated movement by the spring 36 as asharply relieved portion 345: inthecam surface moves under the'camroller 35;" s s Further embodiments. modifications; and variations maybe resorted to within-the scope of the invention as here claimed.

What is claimed is:

, 1. In a boxcovering machine, a pivotally mounted cutter carrier, meansfor pressing means. 1

2.111 a box covering'machine, a pivotally mounted carrier for a,cuttercand -a' safetv action cutter mechanism whereby lithe oscillatingZca-rrier moves the, cutter gradua-lly toward the paper cutting positionand then permits the cutter to haveyafshort.

free ,-quickmovement forthe final period, SllCl-JDQZIIIS including a camand a cam-"ens gaging element, the latter being indirectly.

connected to the carrier and said cam havmg a rounded shouldercontrolling the cutting stroke of the cutter and releasing the cutterfor quick, free action only at the final I portion of its cuttingstroke.

3. In a box covering machine, a driving shaft, a bearing portionsurroundingysaid shaft and including a boss, and an arm carrying devicerotatably mounted upon the said boss portion to swing around the axisof-the shaft and adapted to be readily attached to and detached from thebearing, and means for locking the arm carrying device against axialmovement on the bear ing portion but permitting angular movemen tj 4:.In a box covering'machine, a pivotally mounted cutter carrier, a fixedlymounted platemember, means for moving the cutter carrier yieldinglytoward the fixed plate member, said means including a link and levertrain connected to the cutter carrier, a cam having an effective facewhereby the cutter carrier moves'down gradually to a predeterminedposition and is then allowed an accelerated final movement. and tripmechanism forming a part of said means.

5. In a box covering machine, a driving shaft and a form carrying andturning shaft, a hub in which said shaft turns, and a device including asubstantially radial arm readily bodily attachable to and removablefromthe said hub and having means for operatively connecting the drivingshaft and the'form carrying shaft.

6. In a box covering machine,a substantially fixed cutter plate and acutter carrier pivotally mounted. as to said plate and means foroscillating'said carrier and including an automatic disconnecting trip.

- 7. In a box covering machine, a substantially fixed cutter plate,a'c'utter carrier pivotally' mounted as to said plate, means foroscillating said carrier, said means including a cam mechanism forgiving an initial Opening movement to the cuttercarrier and an automatictripping device to release the carrier, and means for yieldinglyswinging the cutter carrier to the cutting position.

8. In a box covering machine, a substan tially-fixed cutter plate, acutter carrier pivotally mounted as to said plate, means for oscillatingsaid carrier, said means includ ing" a'cam mechanism for giving aninitial opening movement to the cutter carrier, and means for yieldinglyswinging the cutter carrier to the "cutting position. said meansincluding trip means for disconnecting the cutter carrier and the cammechanism so that the cutter carrier can be independently operated for acutting stroke.

' 9. In .abox cot eringmaehinc, a substantially fixed cutter plate, acutter carrier pivotally mounted as to said plate, means for oscillatingsaid carrier. said means including a cam mechanism for giving an initialopening ,movement to the cutter carrier, means for yieldingly swingingthe cutter carrier to the cutting position, and gravity actuated meansfor continuing the opening movement of the cutter carrier after itspower initiated movement.

10. In a box covering machine, a carrier frame including a transverseportion, a cutter beam pivotally mounted upon the car- .rier frame, andmeans for rigidly adjusting the cutter beam as to said transverseportion, said carrier frame being pivoted on an axis along its rearportion and parallel to the cutter member.

11. Ina box covering machine, a pivoted cutter carrier having at itsfront portion a lever mechanism connected to and automaticallydisconnected from said carrier,said mechanism being operative by the camt0 retract'the carrier from the cutting position, and means foryieldingly throwing the carrier in the cutting stroke and controlled bysaid cam;

13. In a box covering machine, a cutter carrier having at its frontportion a cutting blade, a pivot, the axis of which is along the rearportion of the carrier, a calii, a link and levermechanism connected tosaid can rier, said mechanism being operative by the cam to retractthecarrier from the cutting position, and means for yieldinglythrowingthe carrierin the cutting stroke and controlled by said cam,said connecting means including a trip device whereby the carrier isautomatically disconnected from the power actuating means.

14:. In a box covering machine, a cutter carrier, a cutter carriedthereby, and an operating mechanism connected to the cutter carrier andincluding a rock shaft, a drive lever fixed thereon, a lever loosethereon, and trip means for connecting said levers.

In testimony whereof I have signed my name to this specification.

' ALBERT IVORCESTER.

